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本帖最后由 yyj 于 2018-1-30 11:01 编辑 4 `0 ?( B- e' z6 w5 N& M9 v
- [code]EDMA sample test application
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- * edma_test.c+ ?$ u& b# R4 i" M- x" ~
- *
' Y0 K+ {2 c+ s. r* |! J - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.) }. e4 v( v" i7 W# v3 S
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: w: D" u7 J8 O2 a& L2 O
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; V5 d: R3 h1 |
- *( T. X( W- n, v/ \5 ?- B( T
- * This program is free software; you can redistribute it and/or# L; ]$ u9 n2 k; y2 N$ L& w' ?
- * modify it under the terms of the GNU General Public License as$ v$ X3 m1 v4 |' ~% y9 i
- * published by the Free Software Foundation version 2.
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& P1 H: b: }9 u! l7 x \1 j8 C1 S% e - * This program is distributed "as is" WITHOUT ANY WARRANTY of any! h2 [9 P0 B* p6 ?7 O' S
- * kind, whether express or implied; without even the implied warranty* v2 |2 v4 a( |$ r7 J- _
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# m. m* N. i: H8 S3 X# Z
- * GNU General Public License for more details.$ |, E7 S- u# _$ S
- */6 \" Y1 F2 u6 G
7 P5 E# j8 k; h- #include <linux/module.h>& S ` [$ n: ^
- #include <linux/init.h>7 I: g4 g2 d9 c5 d1 Y
- #include <linux/errno.h>
M! ?, ` I: T+ Z: C: { S1 k2 Q - #include <linux/types.h>" O0 s! x$ _% x: q
- #include <linux/interrupt.h>- Z& b/ u5 {0 h( V8 I' g$ C' u
- #include <asm/io.h>8 M* O; }4 Y. s. J4 p
- #include <linux/moduleparam.h>
6 Z6 I$ A' t; {& a' n0 y: t - #include <linux/sysctl.h>
* _. v+ M; i( }9 B - #include <linux/mm.h>7 |3 _0 a: i- f3 Q( X
- #include <linux/dma-mapping.h>0 W2 o, L0 \2 ]) V
/ o) M) S6 w& f8 k; B3 n- #include <mach/memory.h>1 ]9 S- |* c* C1 N
- #include <mach/hardware.h>9 i" p& D# i- q1 _3 D# x7 |2 [
- #include <mach/irqs.h>3 n; m: R' a$ e1 C, b5 {8 G
- #include <asm/hardware/edma.h>
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% c" W3 I9 n- o' o- #undef EDMA3_DEBUG* n) _* t5 j/ K$ i7 L2 K* [
- /*#define EDMA3_DEBUG*/, ]6 e4 l$ H- c& x; R+ m: l2 u# j( v
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- #ifdef EDMA3_DEBUG
n4 V* a8 T+ J! H% {1 [ - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' P+ t) d* J7 `$ s* A/ e
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
; r8 c5 V r* E7 N, W' I! ~ - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
9 A% i% g9 s0 Q% m }/ h* v1 J - #else. q4 ]4 Q% q6 j4 y
- #define DMA_PRINTK( x... )0 }: C& ~# p3 c& \$ Q
- #define DMA_FN_IN
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- #endif
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) f' h" L! L$ }: _- #define MAX_DMA_TRANSFER_IN_BYTES (32768)9 Y/ A( ~# g) `, a2 X: Y
- #define STATIC_SHIFT 3& Q5 s, {- F9 B
- #define TCINTEN_SHIFT 205 v5 ^/ ]0 U# \+ b. @
- #define ITCINTEN_SHIFT 21
, q3 T) c! x0 t! ~ _/ } - #define TCCHEN_SHIFT 22
4 f2 m3 G; J" W7 D" t! P - #define ITCCHEN_SHIFT 23
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; D0 {) w9 C- |- static volatile int irqraised1 = 0;
; I p# E% c' B2 ~9 p& } - static volatile int irqraised2 = 0;, [0 p, F. \9 m' ]' b! i7 y
- v) |0 h' _# d. @- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- {5 M! e* t( t8 R4 e0 E3 C
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( J/ [9 B; f. Q; p- t4 L7 a
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 {2 V- k4 n9 q& T
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- dma_addr_t dmaphyssrc1 = 0;
) ~" y! S$ d. q - dma_addr_t dmaphyssrc2 = 0;6 D( k$ [5 j5 D6 }
- dma_addr_t dmaphysdest1 = 0;) G! @2 p+ U: X! @( K
- dma_addr_t dmaphysdest2 = 0;2 F& t8 g/ U5 W
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- char *dmabufsrc1 = NULL;
2 D5 p X' g$ y0 g1 p+ @ - char *dmabufsrc2 = NULL;
1 S* Q; o$ o4 ^0 E* U - char *dmabufdest1 = NULL;
3 i) ?5 k p& U+ N7 i$ Q% v9 p - char *dmabufdest2 = NULL;; [0 y6 @7 A0 W' | d
r5 R, u# R# [2 M9 u0 b- static int acnt = 512;. x+ B, t! I* `- p; s4 o$ Y) E
- static int bcnt = 8;1 l7 c# |, {' K. F# l3 {# T4 V; V
- static int ccnt = 8;
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I1 P* j& Z' s: m6 ^0 {- module_param(acnt, int, S_IRUGO);- Q5 s5 B6 u! S7 O. m: _3 ^; T6 z
- module_param(bcnt, int, S_IRUGO);
9 [) `' _: a8 c9 r8 L8 ?6 F - module_param(ccnt, int, S_IRUGO);
复制代码 $ d- ~. n* `- s# F7 [0 _6 \3 K
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这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用, F# R/ X/ S& W4 j8 |1 Q
arm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。( a2 F }8 Z# U# }$ y
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。9 v+ }5 D& f9 k& E/ C: c
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